Zeno speaks the truth!
We've all gotten lost in the throws of consumerism before and probably will again before all is said and done. That being said, I've learned to reign that in somewhat and to buy the best that I can. I know that sentiment has been expressed already, but it's true.
You should also buy what moves you. If "the best that you can" is in the $300 to $500 range but you are considering "just buying something" it's not going to please you. I've got a pipe or two left that I rarely smoke, but cost me over $250 because I thought I just had to have a fancy artisan pipe. Keep in mind that's all I buy now, but at the time it was a silly purchase.
A good example of why it's best to buy what moves you: I recently bought my first Rad Davis Pipe and I am totally in love. However, it took 3 years of watching every update that he made to his website, checking every Rad that got posted in a retailer's update, and following every e-bay Rad that popped up to find the one that sang my name.
Put some money aside and wait for that pipe. When it appears, buy it and you won't be sorry you waited.